Synonyms of adulterous

adulterous

adjective

ə-ˈdəl-t(ə-)rəs 

as in extramarital

relating to or being a sexual encounter or relationship between a married person and someone other than their spouse

had an adulterous affair that nearly destroyed his marriage

Synonyms & Similar Words

• extramarital
• extracurricular
• two-timing
• premarital
• promiscuous
• adulterine
• adulterate

Example Sentences

Recent Examples of adulterous

The unapologetically lurid tale of two families locked in an ever-complex cat’s cradle of class resentments and adulterous power plays also swarms with queen bees and jaw-droppingly muscular men that feel straight out of the Real Housewives playbook. — Bloomberg, Mercury News, 22 Jan. 2026

As with the true story of the adulterous writers, there’s something at the center of The Disappear that feels cringily solipsistic. — Sara Holdren, Vulture, 19 Jan. 2026

In the months since the incident unfolded at Gillette Stadium, the public — which was quick to discover that Cabot worked as an HR executive under Byron, and that both were married to other people at the time — has been quick to brand the pair as adulterous villains. — Hannah Dailey, Billboard, 18 Dec. 2025

The supernatural thriller sees a woman return from death as a vindictive spirit to torment her adulterous husband. — Andreas Wiseman, Deadline, 26 June 2025